It's likely because it came off as sounding a bit too much on the complaining side and some people just don't like that. In general when it comes to farming gold chests for feet, you want to have about 10-15 amber lights. Back when they first came out, some people thought that capping out amber was the way to go, but that in all honesty is a bad route to choose.
I actually picked up my Thf feet just from doing Fell Cleave burns on the Murrain Chigoes while working towards completing pop sets for Itzpapalotl (Tunga's key item being the only KI for that set that you can't get from a gold chest) and that was with no amber at all. Capped azure and capped pearlescent, but no amber whatsoever.
In all honesty, given that you saw 10 other feet drop, you were on the right track as far as getting Thf, but you were just unlucky on it, that's all. After you cap out your pearl and get the appropriate level of amber, there's really nothing you can do other than hope for the best, cause it's really just up to luck.
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